Once you have developed a task analysis, you should not change the sequence of steps, add steps, or remove steps in the analysis. this invalidates the task analysis.
a. every step in a behavior chain (except the first and last behaviors) serves two functions: an sd for the subsequent step and as a conditioned reinforcer for the preceding step.
b. a behavior chain with a limited hold results in performance that is both accurate and fluent.
c. once you have developed a task analysis, you should not change the sequence of steps, add steps, or remove steps in the analysis. this invalidates the task analysis.
d. in order to construct a task analysis, it is acceptable and valid to perform the behavior yourself and write down the steps to the skill ask you perform them.